From 6a3ae181655ea43a3a5d5996f8f4826d2130abe3 Mon Sep 17 00:00:00 2001
From: Christian Hergert <chergert@redhat.com>
Date: Mon, 26 Jun 2023 15:33:03 -0700
Subject: [PATCH] libsysprof-gtk: measure layers from chart

---
 src/libsysprof-gtk/sysprof-chart.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/libsysprof-gtk/sysprof-chart.c b/src/libsysprof-gtk/sysprof-chart.c
index 0ed6bfdd..99e29a98 100644
--- a/src/libsysprof-gtk/sysprof-chart.c
+++ b/src/libsysprof-gtk/sysprof-chart.c
@@ -168,6 +168,32 @@ sysprof_chart_click_pressed_cb (SysprofChart    *self,
   return ret;
 }
 
+static void
+sysprof_chart_measure (GtkWidget      *widget,
+                       GtkOrientation  orientation,
+                       int             for_size,
+                       int            *minimum,
+                       int            *natural,
+                       int            *minium_baseline,
+                       int            *natural_baseline)
+{
+  *minium_baseline = -1;
+  *natural_baseline = -1;
+
+  for (GtkWidget *child = gtk_widget_get_first_child (widget);
+       child != NULL;
+       child = gtk_widget_get_next_sibling (child))
+    {
+      int child_min;
+      int child_nat;
+
+      gtk_widget_measure (child, orientation, for_size, &child_min, &child_nat, NULL, NULL);
+
+      *minimum = MAX (*minimum, child_min);
+      *natural = MAX (*natural, child_nat);
+    }
+}
+
 static void
 sysprof_chart_dispose (GObject *object)
 {
@@ -240,6 +266,7 @@ sysprof_chart_class_init (SysprofChartClass *klass)
   object_class->get_property = sysprof_chart_get_property;
   object_class->set_property = sysprof_chart_set_property;
 
+  widget_class->measure = sysprof_chart_measure;
   widget_class->size_allocate = sysprof_chart_size_allocate;
   widget_class->snapshot = sysprof_chart_snapshot;